tor causes linear motion of the piston within the housing. One side of the piston is within a pumped fluid chamber that changes volume when the piston is moved within the housing."/>
公开/公告号US9322230B2
专利类型
公开/公告日2016-04-26
原文格式PDF
申请/专利权人 EMIL R. TALAMO;JOHN H. COHEN;
申请/专利号US201214122179
申请日2012-05-09
分类号F04B49/00;E21B7/128;E21B21/00;
国家 US
入库时间 2022-08-21 14:30:52